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Credit
Pharmacologia, or, The history of medicinal substances : with a view to establish the art of prescribing and of composing extemporaneous formulae upon fixed and scientific principles : illustrated by formulae, in which the intention of each element is designated by key letters / by John Ayrton Paris. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)